Add test for star checkboxes

Author: dkarter

spec/checkboxes_spec.rb

@@ -14,6 +14,17 @@
     EXPECTED
   end
 
+  it 'inserts a * checkbox after the previous one' do
+    test_bullet_inserted('do that', <<-INIT, <<-EXPECTED)
+      # Hello there
+      * [ ] do this
+    INIT
+      # Hello there
+      * [ ] do this
+      * [ ] do that
+    EXPECTED
+  end
+
   it 'inserts an empty checkbox even if prev line was checked' do
     test_bullet_inserted('do that', <<-INIT, <<-EXPECTED)
       # Hello there